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applying a function to each array element

Hello all -

I would like to use the is_numeric() function to check each element of
an array. I am just looking for a false if any element is not numeric,
or a true if each element is numeric.

Can I do this with a single function in a single like, or do I have to
do a foreach{ ... break() } structure?
Jun 2 '08 #1
4 1575
la*****@gmail.c om wrote:
Hello all -

I would like to use the is_numeric() function to check each element of
an array. I am just looking for a false if any element is not numeric,
or a true if each element is numeric.

Can I do this with a single function in a single like, or do I have to
do a foreach{ ... break() } structure?
You need to use a loop. is_numeric() will just return false on an
array, because the array is not a numeric value.

--
=============== ===
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
js*******@attgl obal.net
=============== ===

Jun 2 '08 #2
la*****@gmail.c om wrote:
I would like to use the is_numeric() function to check each element of
an array. I am just looking for a false if any element is not numeric,
or a true if each element is numeric.

Can I do this with a single function in a single like, or do I have to
do a foreach{ ... break() } structure?

You can do so. But it may be more difficult to understand:

$result = (count(array_fi lter($arr, "is_numeric " ))=count($arr))

or try this:

$result = !in_array(false , array_map("is_n umeric", $arr))
or try this:

Once declare r_is_numeric like this:

function r_is_numeric($l ogic, $element)
{
$logic = $logic and is_numeric($ele ment);
return $logic;
}

All you need is:

$result = array_reduce($a rr, "r_is_numer ic", true);


Heiko
Jun 2 '08 #3
array_walk will do the job.

http://tr2.php.net/manual/en/function.array-walk.php
On May 14, 9:44*pm, lawp...@gmail.c om wrote:
Hello all -

I would like to use the is_numeric() function to check each element of
an array. I am just looking for a false if any element is not numeric,
or a true if each element is numeric.

Can I do this with a single function in a single like, or do I have to
do a foreach{ ... break() } structure?
Jun 2 '08 #4
la*****@gmail.c om escribió:
I would like to use the is_numeric() function to check each element of
an array. I am just looking for a false if any element is not numeric,
or a true if each element is numeric.

Can I do this with a single function in a single like, or do I have to
do a foreach{ ... break() } structure?
My two cents:

function is_numeric_arra y(&$array){
foreach($array as $i){
if(!is_numeric( $ic)){
return FALSE;
}
}
return TRUE;
}

--
-- http://alvaro.es - Álvaro G. Vicario - Burgos, Spain
-- Mi sitio sobre programación web: http://bits.demogracia.com
-- Mi web de humor al baño María: http://www.demogracia.com
--
Jun 2 '08 #5

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